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Cnemarchus rufipennis

Rufous-webbed Bush Tyrant


Cnemarchus rufipennis

(Taczanowski, W, 1874)
Birro Gris

Family: Tyrannidae
Order: Passeriformes
Class: Aves
Phylum / Division: Chordata
Kingdom: Animalia

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Synonyms: Muscisaxicola rufipennis, Polioxolmis rufipennis.

Subspecies:





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Records from Santa Victoria Oeste

Conservation status according to BirdLife International: Least Concern


Description


 Large and slender tyrant flycatcher, about 20–21 cm in length, with an elongated shape, long wings, and a broad tail. When perched, its plumage is rather plain: uniform ashy gray over the entire body, slightly paler on the underparts, with whitish belly and undertail coverts, a faint pale eyebrow, and fine streaks on the throat. In flight, however, the striking cinnamon wing feathers with a dark subterminal band and the dark gray tail with rufous edges and a black terminal band are clearly visible. The bill is long, straight, and sharp, entirely black, and the legs are dark grayish. Male and female are similar; juveniles show a slight beige tint on the belly. When perched, it resembles a gaucho (Agriornis) or a ground tyrant (Muscisaxicola).

Geographical distribution: Inhabits the Andes from central Peru and western Bolivia to northwestern Argentina. In Argentina, it occurs in ravines and slopes near queñoa (Polylepis spp.) forests, in the upper Yungas zone, between 3,500 and 4,000 m a.s.l. It is mainly recorded in Jujuy and Salta, with a small population in the Cumbres Calchaquíes of Tucumán.

Habitat: Prefers open high-Andean environments with rocky outcrops, grasslands, and cliffs, especially near queñoa forests or montane scrublands. Uses elevated perches such as dry branches, Puyas, rocks, or posts from which it watches and hunts.

Feeding: Insectivorous. Catches insects from a perch in short, precise flights, also “hawks” them in the air. Occasionally descends to the ground to chase prey with short runs, and often strikes large prey against rocks to kill them before eating.

Behavior: Usually solitary or in pairs. Territorial, it spends long periods perched on exposed rocks or branches, from which it performs hunting flights. Its song is a soft, high-pitched whistle of low intensity (“tuii tuii piu tiui”).

Breeding: Breeds in queñoa forests and rocky ravines. The nest is an open cup built with fine twigs and moss, placed in trees, generally Polylepis, or in bromeliads of the genus Puya. Both adults feed the chicks.

Conservation status: Uncommon species with a restricted distribution in northwestern Argentina. Its presence depends closely on queñoa remnants, an ecosystem threatened by logging, grazing, and fires. In Argentina, it is classified as Vulnerable (VU), while internationally it is listed as Least Concern (LC), though with a declining population trend.


Authors of this compilation: Diego Carus and Maria Belén Dri - 09/11/2025





Geographic distribution


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Species photographs

Last published photographs

Foto
Photography ID: 662026
  Adult

Santa Victoria Oeste
Salta
Argentina
11/14/2025
Pablo Serur
Foto
Photography ID: 595433
  Adult

Santa Victoria Oeste
Salta
Argentina
07/21/2024
Gustavo Daniel González
Foto
Photography ID: 318880
  Adult

Santa Victoria Oeste
Salta
Argentina
01/17/2019
Marcos Augusto Lartigau
Foto
Photography ID: 171314
♂ ♀
  Adult

Santa Victoria Oeste
Salta
Argentina
10/06/2016
Andres Teran



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 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
239643514/11/2025ArgentinaSaltaSanta Victoria OestePablo Serur
237004604/09/2025ArgentinaSaltaSanta Victoria Oeste2Hugo Caverzasi
212967521/07/2024ArgentinaSaltaSanta Victoria OesteGustavo Daniel González
89063517/01/2019ArgentinaSaltaSanta Victoria OesteMarcos Augusto Lartigau
68570419/11/2017ArgentinaSaltaArroyo Peña Negra, Santa Victoria OesteMarcelo Gavensky
48831607/10/2016ArgentinaSaltaSanta Victoria Oeste1Emilio Peña
48881706/10/2016ArgentinaSaltaSanta Victoria Oeste4Andres Teran
Page 1

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Recommended citation
Please use the following reference when citing this species account.
EcoRegistros. 2026. Rufous-webbed Bush Tyrant (Cnemarchus rufipennis) – Species account. Accessed from www.ecoregistros.org on 20/09/2026.